Side by side

Marathon JDD (Jumbo Day/Date) Anthracite Diver's AutomaticvsHelgray Silverstone (Refurbished)

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250
Silverstone (Refurbished)
HelgraySilverstone (Refurbished)
MSRP $150

At a glance

11 of 29 specs differ
Diameter
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Silverstone (Refurbished)40mm
Power Reserve
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Silverstone (Refurbished)40h
Water Resistance
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
Silverstone (Refurbished)50m
MSRP
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250
Silverstone (Refurbished)$150

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
46mm
40mm
Thickness
18mm
12mm
Lug-to-Lug
55mm
46mm
Lug Width
22mm
20mm
Material
316L Stainless Steel (Anthracite IP)
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

1 specs
Dial Color
Anthracite
Black

Movement

2 specs
Caliber
Sellita SW220-1
Time Module
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$3,250
$150

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.

Helgray Silverstone (Refurbished)

Owners widely praise the Helgray Silverstone (Refurbished) for its crisp printing, applied indices, legible date wheel, and solid pushers, noting an amazing fit and finish for the price and an attractive aesthetic. Some owners find the metal bracelet squeaks, and the 24-hour subdial is less desirable than sub seconds. One owner criticizes the thick case, downward-angled lugs that can dig into the wrist, and a crystal with noticeable edge effects. Overall, owners rate the Helgray Silverstone (Refurbished) highly for its impressive build quality and aesthetic appeal at its price point.

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